US4471851A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mud guard system for motorcycle
Assignee: Honda Motor Co Ltd
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Filing: 1982-08-30
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Granted: 1984-09-18
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Expires: 2002-08-30
Abstract
Abstract The mud guard system for a chain of a motorcycle in which a drive chain is made to run on both a front sprocket connected to an engine and a sprocket connected to a rear wheel at the trailing end of a rear fork, comprises a mud guard member having a cylindrical shape for allowing the chain to run therethrough and disposed at one side of the rear wheel and a link or another connecting member for coupling the mud guard member floatingly to the rear fork so that the mud guard member can move in the longitudinal direction of the chain.
Inventors
- 👤 Tadashi Kamiya
- 👤 Shigeru Hattori
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:48
CPC Classifications
B; B62; B62J; B62J13/00; B62M; B62M9/00; B62M2009/007
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
134 words
A mud guard system for a motorcycle, said motorcycle having a chain laid around a front sprocket coupled to an engine and a rear sprocket coupled to a rear wheel on a rear side of a rear fork, said rear wheel having a rear tire mounted thereon, said mud guard system including a hollow mud guard member through which said chain is allowed to run for scraping mud from said chain, said mud guard being substantially equal in length to the radial width of said rear tire, and means for movably coupling said mud guard member to said rear fork to permit movement of said mud guard member in a chain driving direction for reducing the amount of force exerted on said mud guard member by said chain while scraping mud from said chain.
Claim 2
Dependent Claim
134 words
A mud guard system for a motorcycle, said motorcycle having a chain laid around a front sprocket coupled to an engine and a rear sprocket coupled to a rear wheel on a rear side of a rear fork, said rear wheel having a rear tire mounted thereon, said mud guard system including a hollow mud guard member through which said chain is allowed to run for scraping mud from said chain, said mud guard being substantially equal in length to the radial width of said rear tire, and means for movably coupling said mud guard member to said rear fork to permit movement of said mud guard member in a chain driving direction for reducing the amount of force exerted on said mud guard member by said chain while scraping mud from said chain.
Claim 3
Dependent Claim
18 words
The mud guard system of claim 1, in which said hollow mud guad member has a cylindrical shape.
Claim 4
Dependent Claim
24 words
The mud guard system of claim 2, in which said hollow mud guard member has an outwardly skirted portion at a chain introducing portion.
Claim 5
Dependent Claim
19 words
The mud guard system of claim 1, further including a chain guide for guiding the travelling of said chain.
Claim 6
Dependent Claim
108 words
A mud guard system for a motorcycle having a chain laid around a front sprocket coupled to an engine and a rear sprocket coupled to a rear wheel on a rear side of a rear fork, said mud guard system including a hollow mud guard member through which said chain is allowed to run and coupling means comprising a holder fixed to said mud guard member and a coupling unit rotatably coupled at one end to said holder and at the other end to said rear fork for coupling said mud guard member to said rear fork, said mud guard member being movable in a chain driving direction.
Claim 7
Dependent Claim
108 words
A mud guard system for a motorcycle having a chain laid around a front sprocket coupled to an engine and a rear sprocket coupled to a rear wheel on a rear side of a rear fork, said mud guard system including a hollow mud guard member through which said chain is allowed to run and coupling means comprising a holder fixed to said mud guard member and a coupling unit rotatably coupled at one end to said holder and at the other end to said rear fork for coupling said mud guard member to said rear fork, said mud guard member being movable in a chain driving direction.
Claim 8
Dependent Claim
19 words
The mud guard system of claim 5, in which said coupling unit is made of rigid and solid material.
Claim 9
Dependent Claim
22 words
The mud guard system of claim 5, in which said coupling unit is comprised of a hollow cylinder and a slidable rod.
Claim 10
Dependent Claim
16 words
The mud guard system of claim 5, in which said coupling unit includes a coil spring.
Claim 11
Dependent Claim
20 words
The mud guard system of claim 5, in which said coupling unit is at least partially made of elastic material.
Claim 12
Dependent Claim
118 words
A mud guard system for a motorcycle having a chain laid around a front sprocket coupled to an engine and a rear sprocket coupled to a rear wheel on a rear side of a rear fork, said mud guard system including a hollow mud guard member through which said chain is allowed to run and coupling means comprising a holder fixed to said mud guard member, a sliding member fixed to said holder, and a rail device fixed to said rear fork, said rail device being adapted to slidably receive said sliding member therein, said coupling means for coupling said mud guard member to said rear fork, said mud guard member being movable in a chain driving direction.
Claim 13
Dependent Claim
118 words
A mud guard system for a motorcycle having a chain laid around a front sprocket coupled to an engine and a rear sprocket coupled to a rear wheel on a rear side of a rear fork, said mud guard system including a hollow mud guard member through which said chain is allowed to run and coupling means comprising a holder fixed to said mud guard member, a sliding member fixed to said holder, and a rail device fixed to said rear fork, said rail device being adapted to slidably receive said sliding member therein, said coupling means for coupling said mud guard member to said rear fork, said mud guard member being movable in a chain driving direction.
Claim 14
Dependent Claim
28 words
The mud guard system of claim 10, in which said rail device including means for biasing said mud guard member in a direction opposite the chain travelling direction.
Claim 15
Dependent Claim
26 words
The mud guard system of any one of claims 6 to 9 and 10, in which a brush member is provided in said mud guard member.
Claim 16
Dependent Claim
23 words
The mud guard system of claim 5, said coupling means including a plurality of said coupling units substantially in parallel to each other.
References Cited (Backward Citations)
US1195133A
Cited
US4158402A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-09-18 | 1988-03-19 | 1988-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-09-18 | 1992-03-19 | 1992-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-09-18 | 1996-03-19 | 1996-09-18 | $7700.00 | Window Closed / Lapsed |